Breech-block mechanism of guns.



E. MLLER. v BEEEGH BLOCK MEGHANISM OE' GUNS v- APPLIOATIQN'PILBDJAN.4,1911. Y 1,003,288. Y Patented sept. 12,1911

2 SHEETS-#SHEET 1 E. MLLER. BBEBOH BLOCK MEGHANISM 0F GUNS.

APILIOATTONl TILED JAN, 4, 1911;

Patented Sept. 12,1911,

`2 SHEETS-SHEET 2.

WINES-ses WW i ar i' y ICE.

EMIL Munten, or DUssnLnoRn'enRMA-ivv, Assioivon 'ro RHEINISCHE METALL- WAARENTrUND MAscmNnNrAB-RIK, or nussELnoRrwnnRENnoRr, GERMANY,

A ooBPoRA'rIoN or GERMANY. v

vBannon-BLOCK MECHANISM or GUNsg Lacasse.

To ,alliuhom it may concern:

Be 1t kn`own that I, EMIL h/ILLER, en-

.v gineer, a subject-of the German Emperor, re- .g siding at 83 Collenbachstrasse, Dusseldorf, ".Germany, have invented certain new and ".usefu'l' v 'ivlechanism of Guns; and I do hereby declare l-the following to be a `full,-clear, and exact Improvements in Breech-Block description vofthe invention, such-as will enable others skilled in the artto which it appertains to make and use the same.

This invention *relates Vto a breechjblock mechanism orguns having aV recoiling barrel, of the kind in which the breech is .lutomatically openedby the rotationpof aV cranked lever through a second cranked f lever,"the rst lever being adapted to move the breech. block.

According to the invention the cradle .carries 'af .pin-Z which,` during the sliding movement of. the barrehis liberated by a tappetv on` the `underside ott-lie second cranked'lever and when so liberated enters into .a curved groove in this second cranked lever and unlocks the yfirst cranked lever through. a separatelevera after which it turns-both .the cranked levers to move ther .breech 4block and .then is returned to its original positionat the end of the groove.

.The accompanying drawings illustrate the invention..

Figure 1 is aside elevation of :the breech endof the'barrel and a part of the cradle. Fig. 2 is a plan; Fig. 3 is anielevation of the casing rhounted on the cradle and of the second cranked lever. Fig. Ll' is a section on line,I 4 4' of Fig.. l through the second cranked'lever and the lever journaled therein., Fig. 5 is a perspective View drawn to an enlarged scale of the last named. two parts. Fi ofgthe second cranked lever on the middle linealu which is .drawn as a stra-ight line. Figs. 7 andv 8ly are detail views drawnto an enlarged scale of the 'casing mounted on the carriage-With spring pins.v

At the upper part of the breech end a. yof thebarrel-'b is'pivoted'by a bolt c a cranked lever eprovided with a handle d. The arm of thiscrankedlever carries a pin-gon v whichxis mounted the slidingvblock-hlwhich engaiges'inthe groove 'z' of the breechblock j n1 the handle d there is pivoteda bent lever' subject to :the action of a spring l.'

-in the casing 5.

6v isa section through the curved groove Specification of Letters Patent. Patented Sept, 1911,

Application filed January 4, 1911. Serial No. 600,756.

The lower arm of this lever abuts against one en d of a lever n, this contact being maintained by a spring. The other end of4 lever fn, carries a tooth 0 which when the 'breech is closed engages in a notch in the breech end. Qn the Same end of the lever n is a projection p engaging Vbeneath one end of another lever Q, the other end of which extends into a cavity in the bolt c. The bolt c is con- 'nected at its lower end with a second cranked'lever 1 so that when-the upper cranked lever is. turned this lower cranked lever also turns. .On the under surface of the cranked lever r is a tappet s having an inclined surface t and a. curved groove u. Int-o this groove there projects laterally a lug w having an inclined surface o and carried by a lever one endof which eX-A tends into a, cavity in the bolt` c. The two levers g and w are connected by a pin. y guided `in a bore inthe bolt c.

Y On lthe cradle z is lixed a casing l in which is guided a pin t carrying at its upper end a roller 2 and at .its lower .end an eye 3. This pijn carries a.` casing 5 which is urged upward by a spring 6. In aprojecting piece 7 of the casing 1 there is'lodged a. casing 8 carrying a. pin 9 which under the aotionof aspring 10 projects into a cavity Between two projections 11 on the casing S there engages the lower arm of a lever l2, the upper arm of which projects from the casing ll and lies inthe path ofthe tappet s on the lever 1.

This construction operates as follows When the recoilingbarrelbrings the surface t of the tappet s against that arm of the lever 12 which-projects from the casing -1 and thus lnoves the casing 8, the pin 9 is withdrawn from the cavity 'of the casing 5 and the pin 4 under the action of its spring 6 is pushedyupward. YVhen the barrel returns the roller 2of the pin 4 enters the curved groove u. Vhile it is traveling on the surface Q3 of the projection w of the lever fc (Fig. 6) the Vlatter is' depressed. This movementFoi the'lever w is communie cated through; pin y to the lever g in such a manner as tof depress that end of lever n, which carries the tooth aand thus to unlock the upper cranked lever e. As soon as the curved part of the groove u acts on vthe roller 2, the second cranked lever r is turned I cranked lever e. 'The arm f ofthe latter the cranked lever. `pressed downward against the pressure of moves the block z in the curved groove i and thus shifts the breech block c outward opening the breech. The groove u in the, second cranked lever 1' slopes toward the rear end in the downward direction,'that is to say it terminates on the under surface of The pin 4 is therefore its spring until the pin 9 again engages in the cavity of the casing 5' and locks the pin. To close the breech the two cranked levers are returned to their originalfpo'sition. By engaging the handle d, the tooth o is pressed downward by the bent llever m and when the handle is released the tooth again engages in the notch in the breech end. It is obvious that by gripping tHe handle d, the breech can be opened independently of the automatic device just described.

I claim as my invention:

1. The combination with a gun having a recoiling barrel, a cradle therefor, and a breech block, of a lever for opening and closing the breechbloclnmeans for locking such lever when the breech block is in its closed position and while recoiling, a second lever connected tothe first mentioned lever,

" a spring `pressed pin mounted on the cradle and normally retalned in an inactive posi` tion, means for liberating such pin during the recoil whereby it assumes i s active posiafter the breech has been'opened.

tion, means actuated by said pin during the return movement ofthe barrel for automatically releasing said locking means of the first mentioned lever, and means coperating. with said pin for actuating both levers, during the return movement of the barrel for opening the breech block.

2. The combination with a gun yhaving .a recoiling barrel, a cradle therefor, and a breech block, of a lever for opening and closing the breech block, means for locking such lever when the breech blockfis in its closed position and while recoiling, va second lever connected to the irst mentioned lever, a scpring pressed pin mounted on the cradle an normally retained in an inactive position, means for liberating such pin during therecoil whereby it assumes its' active posi-` tion, means actuated by .said pin during the return movement of the' barrel for automatically releasing said locking .means of; the first mentioned lever, means coperating with said pin for actuating both levers during the return movement offthe barrel for opening the -breech block, and means car-"r rled by said-second lever fr'automatically returning said pin to its inactive4 position v3. The combination' with a having a recoiling. barrel, a.44 cradle" therefons and a breech block, :of a lever forzsopening vand closingthe breech' b1o`ck,l means :for vlocking tuating closed positionv andwhile recoiling, a" second lever connected tothe first mentloned lever,

a s rm ressed in-'mounted on the cradle p g p P and normally retained-in Van .mactive -position, means carried' by sald second lever for liberating suclilpin 'fiiuring the 4recoil' whereby it assumes its activeposition, means actuated by said pin during the return movement of the barrel for automaticallyA releasing said llocking means of the first mentioned lever, and means coperating tion, means actuated by said pin during the return movement of the barrel for automatically releasing said llocking meansl of the first mentioned'lever, and means carried by said second lever coperating 4with said pin for actuating both leversI during the return movement of the barrel for opening thev breech block.

barrell for ,to the first mentioned lever, pin mounted onthe. cradle. retained in an inactive posi-- tion, means for liberating such pin 'during the recoil whereby it assumes its active posi- .5. The 'combination with agua havin a i recoiling barrel, a cradle j therefor, an breech block, closing the breechblock, means -for locking such lever when the breech block is in its,l

of a lever .for opemng andv closed position and while recoiling, a second lever connected to the first mentioned lever, a spring pressed pin mounted on the cradle .and normally retained in an 'inactive position, means carried by said second leverfor liberating such pin during the recoil where-- by it assumes its active position, lmeans actuated by said pin during the return movement of the barrel forl automatically releasing said looking means of the first mentioned lever, and means ond lever coperating with "said pin for acboth levers during `the return movement of the barrel block. v

6. The combinationv with recoiling' barrel, a cradle therefor, and a breech lock, of a `lever for opening and closing the breech block, means fol= locking such lever when the breech block is in its `closed position andwhile recoiling, a second lever connected tothe first mentioned lever,

va spring pressedpin mounted on hecradle.

carried by-said seca gun having. a: l

and normally .retained in an 4ina tive position',- means" -for liberati-ng such pm .during thee-recoil; Wherebrlt assumasts active posi- .vioagand'ineans mended pyfsaid fpia during.- 13:0

1,oos,2s's I 3 lthefreturn movement of the barrel to release fthe* ,locking means' of the first mentioned lever, said second lever having al cam groove- Ainto which said pin projects during the re- .turn of the barrel, said groove being formed "lto'eiect, with the coperation of said pin,

the actuation of both levers to open the ybreech. y Y

i 7. The combination with a gun having a .'recoiling barrel, fa cradle therefor, and a breech block, of a lever for opening and ,gclosingthe breech block, means for locking such "lever when the breech block is in its.

closedrposition and while recoiling, a second levergconnected to the rst mentioned lever,

a spring pressed'pin mounted on the cradle and normally retained in an inactive position, mean's for liberating such pin during .the recoil whereby it assumes its active position, and means actuated by said pin vduring the return-movement of the barrelv to release the locking means of the first mentioned lever, said second lever having a cam groove into which said p in projects during the returnofthe barrel, said groove being formed .to effect, withthe coperation of said pin,

.the actuation of both levers to open the reech and to return the pin'to its normal 'I vinactive position. 73.50

8. The combination with a recoiling'barrel'having a breech block, and a cradle for the barrel, of -a lever for actuating the 'breech block, a pivot bolt for said lever, a

second lever-mounted on said pivot bolt and having@ cam groove in its under face, a tappet' carried by said second lever, a spring .pressed pin, a casing therefor mounted on the cradle, means for normally holding said A pin inactive, means actuated by said. tappet for liberating said pin during the recoil of the' barrel to permit said pin to enter said a spring pressed pin, a casing therefor mounted on said cradle, means for normally holding said pin inactive, means actuated by said tappet for liberating said pin during the recoil of the barrel, a third lever mounted in'said second lever and designed to be er1- gaged and actuated by said pin during the return of the barrel, andmeans actuated by said ythird lever for automatically releasing -the locking means of the lirst mentioned lever, said cam groove in the second mentioned -lever being formed to coperate with the pin to actuate the first and second levers to automatically lopen the breech and return the pin into inactive position.'

In testimony whereof, I have'signed this specification in the presence of two subscribing witnesses.4

EMIL MLLER. [La] Witnesses:

CRAs. J. WRIGHT, WALTER Vo'NNnGU'r, 

